Cloudflare opens Agents SDK as runtime
Cloudflare has opened its Agents SDK as a serverless runtime with durable execution, sandboxed code execution, and virtual filesystems, alongside a dashboard for agent management. In tandem, the Astro team has launched Flue, a new open-source TypeScript agent framework designed to target this runtime.
By transforming the Agents SDK into a generic runtime, Cloudflare is positioning itself as the default operating system for production-grade AI agents, bypassing costly container setups with lightweight, serverless solutions.
* **Durable Execution by Default**: Using SQLite-backed checkpointing (Fibers) solves the volatility of long-running agent loops when LLM APIs time out or processes restart.
* **Isolate-Based Sandboxes**: By using Dynamic Workers (@cloudflare/codemode) instead of full containers for most task code executions, Cloudflare reduces sandboxing start times to sub-10ms and slashes computation costs.
* **Flue Integration**: The new Astro-born Flue framework offers a declarative developer experience, allowing developers to define what an agent knows rather than manually scripting complex loops.
* **Dashboard Control**: Rolling out agent visibility directly in the Cloudflare dashboard indicates a shift from CLI-first prototyping to enterprise-grade operations.
DISCOVERED
2h ago
2026-06-17
PUBLISHED
3h ago
2026-06-17
RELEVANCE
AUTHOR
Cloudflare